Course Content
Part 2: Talking Without Words
How people used to send messages across long distances The story of light flashes, drum beats, smoke signals, and Morse code Why using dots and dashes (or 0s and 1s) is so powerful. Let’s Talk in Just Two Choices: On or Off - What is binary, and why do computers love it? How β€œon” and β€œoff” can mean anythingβ€”yes/no, true/false, A/B Why 2 choices are enough to build everything
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Part 3: How Electricity Can Carry a Message
What is a circuit? How flipping a switch sends a message Why computers are made of millions of tiny switches.
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Part 4: Building Ideas Using Only Switches
What is a logic gate? (Explained without saying β€œlogic gate”) How switches can help us decide things How β€œAND,” β€œOR,” and β€œNOT” control what a computer does.
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Part 5: How to Count, Add, and Remember With Just Wires
How computers add numbers using only switches What memory really is: remembering a single bit, then a byte How your computer stores your name, photos, and passwords. How switches can do math with just yes/no What memory means for a machine What bits and bytes really are (without the jargon). What are AND, OR, NOT, and more. How pictures, words, and videos are stored as 0s and 1s.
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Part 6: Making Bigger Ideas with Tiny Ones
What is a byte? What is a file? How letters, music, pictures, and videos become 0s and 1s What happens when you type on a keyboard
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Part 7: Meet the Heart of the Computer β€” the CPU
What the CPU really does (without calling it β€œcentral processing unit”) How it reads instructions, decides things, and tells others what to do How fast is it, really?
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Part 8: Let’s Look Inside a Real Computer
What is a motherboard? How all the parts connect: CPU, memory, storage, input/output What happens when you turn a computer on.
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Part 9: What Is Software and Who Tells It What to Do?
What is an operating system? How computers follow code like a recipe What happens when you open an app
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Part 10: How Is a Phone Like a Computer?
What’s different inside a phone or tablet? How mobile computers are smallerβ€”but just as powerful Why phones still need the same ideas: binary, circuits, memory.
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Let’s Find Out How Computers Work

🧠 Big Question: Where Do All These Instructions Come From?

If software is just a list of instructions, who makes the list?

The answer is: programmers.

These are people who write code β€” step-by-step instructions in a special language the computer can understand.

Let’s break that down.

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πŸ‘©β€πŸ’» What’s a Programmer?

A programmer is like a recipe writer β€” but instead of cooking food, they cook up apps, games, and tools.

They write instructions like:

  • β€œIf the player presses left, move the car left.”

  • β€œIf the score reaches 100, show β€˜You win!’”

  • β€œIf the user types a letter, show it on the screen.”

They write these instructions using something called code.

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πŸ’¬ What Is Code?

Code is a special language made for computers.

It’s not English or Hindi or Spanish β€” it looks more like this:

python
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if score > 100:
show("You Win!")

Each line tells the computer exactly what to do. No guessing.

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🧠 What Happens to the Code?

  1. The programmer writes the code

  2. A special tool called a compiler or interpreter changes the code into 1s and 0s

  3. These 1s and 0s are stored in a file β€” this is the software!

  4. When you open the software, the computer reads the bits and follows them

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πŸ› οΈ Can Kids Write Software?

Absolutely! You don’t need to be a grown-up.

With tools like Scratch or simple Python, kids write software all the time β€” games, animations, quizzes.

If you’ve ever used block coding or Scratch, you’ve already written software.